Rock&Gem Magazine
Is Earth Leaking from the Middle?
Traditional wisdom holds that material contained within Earth's core is somewhat fixed and stays deep down.
1 min |
September 2025
Rock&Gem Magazine
Deinosuchus
An alligator no more!
1 min |
September 2025
Rock&Gem Magazine
SALAR DE UYUNI
While relatively few people have ever visited the immense salt flat known as Salar de Uyuni (sa-LAR day ooh-yooni), millions have seen it on the big screen. In the 2017 movie Star Wars: The Last Jedi, Salar de Uyuni was the filming location for the fictional Crait, a small planet where white salt covers bright-red, mineral-rich soil, and the Resistance fought the First Order in a climactic battle.
3 min |
September 2025
Rock&Gem Magazine
Taking the Measure of Sloths through Time
They're tiny compared to their past glory!
1 min |
September 2025
Rock&Gem Magazine
Using Obsidian to Track an Empire
Obsidian is volcanic glass.
1 min |
September 2025
Rock&Gem Magazine
ROCK & GEM FIELD GUIDE: Oregon Sunstone
Sunstone is the transparent, gem-quality variety of the mineral labradorite, a calcium-rich feldspar in the plagioclase series.
1 min |
September 2025
Rock&Gem Magazine
Meramec Station Road Calcite
Finding calcite in Limestone Cliffs near St. Louis
7 min |
September 2025
Rock&Gem Magazine
MOSAIC
In January 2025, a group of designers was challenged to create or modify a design for iolite that would show off the gem's pleochroism and that would work for the material's lower refractive index and minimal dispersion. Jeffrey Hill's “Mosaic” is a straightforward design where rough can be oriented to showcase the greys and blues or oriented to show a mixing of the colors.
2 min |
September 2025
Rock&Gem Magazine
TERROIR FIRMER
Volcanic Basalt Shakes Up Snow Capped Cider
5 min |
September 2025
Rock&Gem Magazine
The Strongest Evidence Yet for Extraterrestrial Life! Or not.
It certainly made for splashy headlines. Nikku Madhusudhan (University of Cambridge) and colleagues announced in The Astrophysical Journal Letters that they detected chemical signatures similar to those produced by phytoplankton on Earth, which release dimethyl sulfide and dimethyl disulfide into the atmosphere.
1 min |
September 2025
Rock&Gem Magazine
Improved Alerts of Offshore Earthquakes
It is vital to get accurate readings of the place and time of offshore earthquakes, given their potential for spawning tsunamis and other extreme damage along highly populated coastlines prone to such quakes.
1 min |
September 2025
Rock&Gem Magazine
Subduction Is Alive & Well on Venus
Venus is often called Earth's Evil Twin.
1 min |
September 2025
COINage Magazine
Vintage U.S. Coins Dressed to Impress
DEMAND FOR QUALITY AND RARITY SHOWS MARKET DIRECTION
10+ min |
August - September 2025
COINage Magazine
U.S. Mint Superhero Series Features Superman
IT’S A BIRD! IT’S A PLANE! IT’S SUPERMAN COINS & MEDALS!
4 min |
August - September 2025
COINage Magazine
What Investors and Dealers Should Know About Selling Bullion
CLARIFYING SOME OF THE RULES FOR IRS FORM 1099-B
3 min |
August - September 2025
COINage Magazine
The 7 Wonders of the Coin Market for 2025 & Beyond
PROJECTED POPULARITY BASED ON PAST PERFORMANCE, CURRENT AND PREDICTED EVENTS AND METALS FORECASTS
7 min |
August - September 2025
COINage Magazine
Eric P. Newman Numismatic Education Society Announces Newman Grants
The Eric P.Newman Numismatic Education Society (EPNNES) announced its sixth set of Newman Grants, created to financially assist numismatic authors and organizations pursuing original research in American and world numismatics.
1 min |
August - September 2025
COINage Magazine
PHYSICAL BITCOINS BEGINNING JOURNEY AS COLLECTIBLES
MANY DISCARDED BECAUSE THEY WEREN'T PERCEIVED AS VALUABLE
3 min |
August - September 2025
COINage Magazine
Rush to Portable Wealth
FEVERISH DEMAND FOR HIGH-VALUE COINS IN AN ERA OF RISK
4 min |
August - September 2025
COINage Magazine
PCGS Expands Headquarters During Period of Continued Growth
Professional Coin Grading Service (PCGS.com) recently unveiled its new headquarters in a move that greatly increases office area for the third-party grading firm. The new PCGS headquarters includes more than 100,000 square feet of floor space and creates new and expanded areas for coin and banknote grading, encapsulation, customer service and other operations.
1 min |
August - September 2025
COINage Magazine
No, You Don't Have a $124 Million Penny
Recent online stories about “pennies” worth $124 million and billion-dollar 1976 Bicentennial quarter dollars are either false or grossly misleading, advises the Professional Numismatists Guild (PNGdealers.org), a nonprofit organization composed of many of the country’s top rare-coin experts.
2 min |
August - September 2025
COINage Magazine
PLATINUM IS GAINING STRENGTH
IS A DRAMATIC UPTICK ON THE WAY?
4 min |
August - September 2025
Popular Woodworking
Shaker-Inspired Bench
This woven bench is a simple project to build, and is elegant enough to fit in any decor.
6 min |
October 2025 - Issue 285
Popular Woodworking
Finishing Schedule
Outdoor projects encounter a variety of conditions.
1 min |
October 2025 - Issue 285
Popular Woodworking
F-2 Hammer
It’s not often that a new tool company makes a signifi cant impact in the woodworking market, and it’s even rarer for a hand tool company to do so. However, Zen-Wu Toolworks is achieving just that.
1 min |
October 2025 - Issue 285
Popular Woodworking
Festool Sander
If you've been reading this magazine for a while, you might have noticed that I've been on a quest for the perfect battery powered sander.
1 min |
October 2025 - Issue 285
Popular Woodworking
Shave-A-Shelf
I devised a new way to fit a shelf into a dado.
1 min |
October 2025 - Issue 285
Popular Woodworking
Grizzly G0999 15" Planer
When I think of a benchtop planer, I’m reminded of Ryobi’s AP-10 “lunchbox” planer my grandfather had in his shop.
1 min |
October 2025 - Issue 285
Popular Woodworking
Folding Saddle Square
Making accurate marks is one of the most fundamental tasks in a wood shop, yet it can be quite challenging to master.
1 min |
October 2025 - Issue 285
Popular Woodworking
North House Folk School
Visit the north shore of Lake Superior to connect with a craft community like none other.
3 min |